paster

<?php
/**
 * @author Jakub Roztocil <jakub@webkitchen.cz>
 * @licence GNU GPL v2+
 * @param string $url
 * @return int S-Rank | -1 on error
 */
function getRank($url) {
    $postData = '<?xml version="1.0" encoding="UTF-8"?>' .
    '<methodCall>' .
        '<methodName>getRank</methodName>' .
        '<params>' .
            '<param>' .
                '<value>' .
                    '<string>0</string>' .
                '</value>' .
            '</param>' .
            '<param>' .
                '<value>' .
                    '<string>' . htmlspecialchars($url) . '</string>' .
                '</value>' .
            '</param>' .
            '<param>' .
                '<value>' .
                    '<i4>0</i4>' .
                '</value>' .
            '</param>' .
        '</params>' .
    '</methodCall>';
    $header  = "POST /RPC2 HTTP/1.1\r\n";
    $header .= "Host: srank.seznam.cz\r\n";
    $header .= "Content-Type: text/xml\r\n";
    $header .= "Content-Length: " . strlen($postData) . "\r\n";
    $header .= "Connection: Close\r\n\r\n";
    $errNo = $errStr = '';
    $socket = fsockopen('srank.seznam.cz', 80, $errNo, $errStr, 10);
    if (!$socket) {
        return -1;
    }
    fwrite($socket, $header . $postData);
    $response = '';
    while (!feof($socket)) {
        $response .= fgets($socket, 128);
    }
    $response = preg_replace('/^(.+\r\n)+\r\n/', '', $response);
    $doc = new DOMDocument;
    if (!$doc->loadXml($response)) {
        return -1;
    }
    $xpath = new DOMXPath($doc);
    $result = $xpath->evaluate('string(//member[name = "rank"]/value)');
    if (!is_numeric($result)) {
        return -1;
    }
    $rank = round((int)$result * 100 / 255);
    return $rank;
}

?>